Quantum Energy Heat Pumps: Independent Review

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Note: Solar Choice is not associated with Quantum Energy Heat Pumps or any heat pump manufacturer and has no financial or other incentives to promote any product over another.

At a Glance: Quantum Energy Heat Pump Solar Choice Heat Pumps Score Card

$$$ Price: Quantum heat pumps are in the mid-range of heat pump prices, with models costing between $3,300 to $4,100.

  • Efficiency: The Coefficient of Performance (COP) ranges between 4.3 and 4.5 at ambient temperature 20°C for the different models, however they do not disclose what the inlet water temperature and target temperature was for the test. This makes it difficult to compare against other brands so we estimate their COP is likely between 3.8 and 4.5 with an inlet temperature of 15°C and target temp of 60°C. Score: 3 points
  • Warranty: Quantum’s warranty includes 5 years for the tank and 2 years for electrical and refrigeration components, including labour. This warranty period is shorter than some competitors who offer longer warranties on both parts and labour, which could be a consideration for those looking for long-term reliability and reduced repair costs. Score: 2 points.
  • Customer Reviews: Quantum Energy heat pumps have an average customer review score of 2.5 out of 5, based on 57 reviews. Common issues reported by users include frequent compressor failures and issues with customer service. These factors suggest that while the initial cost is competitive, the potential for higher maintenance costs and customer service challenges may impact overall satisfaction. Score: 1 point
  • Functionality: The heat pumps operate in a wide range of temperatures (-15°C to +40°C), offer stainless steel tank options and use environmentally friendly R290 refrigerant. However, they are loud compared to others on the market at 48dB and lack many key features like a heating element, LCD screen and Wi-Fi App control. Score: 2 points

Please note that the Solar Choice score card reflects our opinions only. Customers are encouraged to do their own research.

Uncover essential details in the comprehensive guide below and find out what you need to know before you buy.

Company Background

Quantum Energy Technologies Pty Limited was created in 2001, and trades as Quantum Eco Hot Water. Through the years Quantum have developed various hot water solutions and the company now focuses on their heat pump hot water solutions for residential and commercial applications.

The company is Australian owned and operated and has an physical address at 22 Rosebery Ave, Rosebery NSW 2018.  

Quantum Energy Heat Pump Model and Ranges

Quantum offers a range of heat pump hot water systems tailored to different household sizes and commercial applications. The primary models include:

  • Quantum 150L Heat Pump (Model 150-08AC6-290): With a storage size of 150L and a rated delivery of 130L, this model offers a heating output of 3.61kW and a Coefficient of Performance (COP) of 4.3. Suitable for small households of up to 3 people.
  • Quantum 200L Heat Pump (Model 200-08AC6-290): Featuring a 200L storage capacity and 175L rated delivery, it shares the same heating output and COP as the 150L model. Ideal for small to medium households of up to 4 people.
  • Quantum 270L Heat Pump (Model 270-08AC6-290): This model provides a 270L storage size and 250L rated delivery, with a slightly higher heating output of 3.81kW and a COP of 4.53. Designed for average households of up to 5 people.
  • Quantum 340L Heat Pump (Model 340-08AC6-290): The largest in the range, offering 340L storage and 315L rated delivery, with the same heating output and COP as the 270L model. Best suited for larger households of up to 7 people.

What’s the Cost of Quantum Energy Heat Pumps?

Quantum Energy heat pumps fall into the mid-range category, priced between $3,300 and $4,100. 

This price range is an estimate of retail cost of the heat pump and excludes installation, freight and any rebates that might apply in your circumstances.

Quantum Energy Heat Pump – Review of Features

Energy Efficiency

Quantum heat pumps offer a solid energy efficiency range between 15°C and 20°C, with a COP varying from approximately 3.5 to 4.5. While some models on the market have higher COP values, these numbers are still competitive and ensure efficient energy use, which can lead to substantial savings on your energy bills.

Environmentally friendly Refrigerant Type

Quantum uses R290 refrigerant, which is known for its lower environmental impact compared to traditional refrigerants. This choice underscores Quantum’s commitment to sustainability and adherence to environmental regulations aimed at reducing greenhouse gas emissions.

Operating Temperature Range

One of the standout features of Quantum heat pumps is that hey proport to operate effectively in a wide range of temperatures, from -15°C to +40°C. This could make them a good choice for various climates, ensuring consistent performance whether you live in a colder region or a warmer one.

Loud Noise Level

The operating sound levels for Quantum heat pumps range between 48dB and 50dB. While these levels are within acceptable limits for household appliances, they are slightly higher than some other models on the market. If you plan to install the unit near living areas, this is something to keep in mind.

No Booster Heating Element

Quantum heat pumps operate at ambient temperatures as low as -15°C without the need for a booster heating element. However the lack of a traditional element will mean that there’s no back up if there are any issues experienced with the heat pump and could be an issue during high demand periods. 

No LCD Screen or Wifi Controller

Unlike many other heat pumps available in the Australian market, Quantum have not incorporated a LCD Screen or Wifi Controller to enable users to control the settings. It is all managed through a ‘digital controller’. Minimal information is supplied on this in their documentation and it is likely that a plumber or technician would need to assist in changing the settings.

Quantum Heat Pump Warranty Details Review

When considering the Quantum heat pumps, the warranty is a significant factor. Quantum provides a 5-year warranty for the tank and a 2-year warranty for both electrical and refrigeration components. These time periods are inclusive of parts and labour. In general this is similar to the warranty offers of heat pumps priced in the mid to low range.

There is some limited information on the warranty within the terms and conditions in the footer of their website.

Pros and Cons of Quantum Heat Pumps


  • Wide Operating Temperature Range: Suitable for varied climates, maintaining efficiency from -15°C to +40°C.
  • Environmental Benefits: Use of R290 refrigerant with lower environmental impact.
  • Stainless Steel Tank and Sizing: Quantum heat pumps come in stainless steel tanks with vitreous enamal lining and offer a number of tank sizes ranging up to 340L.


  • Lack of Features: Missing key functionalities like heating element, LCD screen and Wi-Fi App control.
  • Noise Levels: Slightly higher operating noise levels compared to some other models in the market.
  • Customer Reviews: At the time of writing the public customer reviews for Quantum Heat Pump feature a low score of 2.5 out of 5.

Looking into heat pump hot water systems? Our comprehensive guide makes it easy, covering potential rebates, the real costs of hot water heat pumps, and the truth about ‘free’ upgrades. Learn about energy savings and understand the benefits and drawbacks with clear expert advice. Check out our Heat Pump Hot Water Systems Buyers Guide for an in-depth understanding of heat pumps and you can also see the best heat pumps in Australia compared so you can make an informed purchase decision.

Quantum Energy Domestic Heat Pump Models

Feature150L Heat Pump200L Heat Pump270L Heat Pump340L Heat Pump
Storage Size150L200L270L340L
Rated Delivery130L175L250L315L
Heating Output3.61 kW3.61 kW3.81 kW3.81 kW
Power Input0.84 kW0.84 kW0.84 kW0.84 kW
Coefficient of Performance (COP)
Electrical Supply240V 1 phase240V 1 phase240V 1 phase240V 1 phase
Circuit10 Amps10 Amps10 Amps10 Amps
Water ConnectionsRC3/4”RC3/4”RC3/4”RC3/4”
PTR Valve Setting850 kPa850 kPa850 kPa850 kPa
Expansion Control Valve (ECV) Setting700 kPa700 kPa700 kPa700 kPa
Pressure Limiting Valve (PLV) Without ECV500 kPa500 kPa500 kPa500 kPa
PLV With ECV Fitted300-500 kPa300-500 kPa300-500 kPa300-500 kPa
Operating Sound Level50 dB50 dB48 dB48 dB
Dimensions (Height x Diameter)1620 x 540 mm1950 x 540 mm1900 x 650 mm2200 x 650 mm
Nett (Empty) Weight115 kg115 kg135 kg170 kg
Ambient Operating Temperature-10°C to +35°C-10°C to +35°C-10°C to +35°C-10°C to +35°C
Water Temperature Setting60°C60°C60°C60°C
Hot Water Production Rate72 L/hr72 L/hr75 L/hr75 L/hr

See Quantum Energy Technical Specification Details in more depth here:

150L Solar Heat Pump Specifications

200L Solar Heat Pump Specifications

270L Solar Heat Pump Specifications

340L Solar Heat Pump Specifications

You can also view the full list of hot water heat pump review here.